7230781156 has 81 divisors (see below), whose sum is σ = 14007416241. Its totient is φ = 3265305600.

The previous prime is 7230781153. The next prime is 7230781157. The reversal of 7230781156 is 6511870327.

The square root of 7230781156 is 85034.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 7175784100 + 54997056 = 84710^2 + 7416^2 .

It is a super-2 number, since 2×7230781156² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7230781153) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 118537366 + ... + 118537426.

Almost surely, 2^7230781156 is an apocalyptic number.

7230781156 is the 85034-th square number.

It is an amenable number.

7230781156 is a deficient number, since it is larger than the sum of its proper divisors (6776635085).

7230781156 is a wasteful number, since it uses less digits than its factorization.

7230781156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The cubic root of 7230781156 is about 1933.7266051994.

The spelling of 7230781156 in words is "seven billion, two hundred thirty million, seven hundred eighty-one thousand, one hundred fifty-six".